like.. for example.. a protein shake that contains 150 calories and 20 proteins. etc.. how is that different than eating a chicken that contain about the same calories and proteins? is it possible for someone to drink shakes alone and stay alive if it contains all the necessary vitamins and protein and calories?

I've been body building for about 6 months now and I'm not sure how much protein I should be taking. Some people say about 30 grams a day and others say 1 gram / lb of weight. I'm 6'3", 220 lbs with about 18% body fat (and going down). The other thing is when I should be taking the protein? I do take the protein shortly after a workout session, but do I need to take more protein on the off days as well?

sometimes several tubes are parallel and within and inch apart (1/4" size) on a manifold.